Latching device for car doors



March 29, 1927. 1,622,718

D. HINDAHL LATCHING DEVICE FOR CAR DOORS Filed Aug. 6, 192a 2 Sheets-Sheet 1 March 29, 1927. 1,622,718

D. HINDAHL LATCHING DEVICE FOR CAR DOORS Filed Aug. 6, 1926 2 Sheets-Sheet 2 L- 1Z1 m :19

Patented Mar. 29, 1927.

DAVID HINDAHL, OF CHICAGO, ILLINOIS, ASSIGNOR TO RODGER BALLAST can con FANY, OF CHICAGO, ILLINOIS, A CORPORATION OF MAINE.

- LA'IfGI-IING DEVICE FOR CAR DOORS.

Application filed August 6, 1926.

This invention relates to a device through means of which a car door, for instance,

.erable pressure which may be required in forcing the door to .a tight seating.

The invention, which will be herein illustrated in its application to a side discharge door mounted througl'i means of an overhead hinge upon a hopper bottom car, but which is to :be understood as being applicable to doors in other situations, as well as doors mounted in other ways, involves the principle .of providing a bearing member or face upon a portion of the doorstructure, in position to receive a locking member, preferably .a shaft, sliding in. a plane substantially parallel to the plane of the door in closed position, and holding the door closed, which bearing member or face may, if so desired. be in the form of a wedge or cam,

thereby developing, from the impingement of the locking member, not only retention of closed position, but a pressure of the door toward its seat; the locking member being influenced in its movement to and from impingement against the bearing member or face, as well as in the degree of its pressure against the wedge or cam (when employed), by an eccentric confined between faces aligned in the direction of locking movement so that by rotating the eccentric, for

instance, by having the looking member in the form of .a laterally sliding rotary shaft upon which the eccentirc is non-rotatably mounted and throwing a lever arm rigid with the shaft; the shaft serving as the locking member will be moved with great force into locking hearing with the door by the mere application .of manual force; and by reverse application of the same force, the shaftwill be as readily withdrawn to release the door.

The invention also involves the principle of securing the eccentric in locking position through means of a dog or equivalent device movable into the path of a member projecting from the shaft, after the parts reach locked position. By locating the longitudi nal axis of the locking shaft, which is the Serial No..127, 541.

axis about which the eccentric swings, in the general direction of alignment of a series of doors, the invention lends itself with special advantage to use for simultaneous control of all the doors in the series from asingle point of manipulation, in which instance, the shaft extends past the members of all the doors. Preferably, the members which provide the bearing faces on the door will be suitably fashioned lower ends of door battens, for instance, battens of Z-bar construction, thus providing a pair of wedges or cams insuring the seating of the door at both sides, and the shaft will find its vertical slide hearings in the T-rail stakes or door frame 5 members of the car, while the spaced bearing faces, between which the eccentrics. are confined and which, throughmeans of the eccentrics, develop the vertical sliding movement of the shaft, are conveniently mounted upon side faces oft-he said door frames or stakes. In the accompanying drawings, in which the preferred embodimentiof the invention is shown by way of illustration,

Figure 1 is aside elevation of that portion of a side discharge freight car which is immediately concerned with the present invention, sufiicient of the length of the car being selected to disclose the full width of one door and a fragment of the next door, and thereby suggest application of. the invention for simultaneous control of a plurality of doors. V 1

Figure 2 is a section on theline 2 of Figure 1. l

Figure 3 is a section on the line 3".3 of I Figure 1, but on an enlarged scale.

Figure 4 is a vertical transverse section on the l.ine 4t"*4 of Figure 1, showing the eccentric, the manual control, and the dogging device in elevation and in positions assumed when the doors are released; and

Figure 5 is a View corresponding to Figure 4, but with the pants shown in positions assumed when the doors are locked.

1 represents the portion .of a railway car having side discharge doorways defined by vertical stiles or frames 2, corresponding in position to stakes of the car frame, and havingsaid doorways closed by doors 3 mounted to swing outwardly upon ,overhead longitudinally extending hinges 4:. Doors 3 are constructed with battens 5 which may with advantage be constructed of rolled Z-bar stock, and these battens may, if desired, for the purpose of forcing the door into tightly closed position, have their lower ends fashioned into cams or wedge portions 6 which, as shown in Figure 3, preferably include in their design rounded striking faces 7 and beveled or can'i-shaped bearing faces 8 which are inclined inwardly and downwardly to the plane of the door. 9 represents a vertically moving locking member which, in so far as concerns its immediate eoaction with the bearing face 8. is in effect a pin or stud which, for convenience of mounting it upon the car and bringing it into bearing with a plurality of faces 8, for instance, when said faces are provided upon the two battens 5 of a door, is best developed in the form of a shaft 9, as shown in Figures 1 and 2, which finds its guide in the slots 10 of the stakes or vertical stiles 2 of the doorways (Figures 3, 4, and 5) which confine the shaft laterally with freedom of vertical movement into and out of cooperation with the faces 8, and has its vertical movement limited by the horizontal bracket faces 11 and 12, which confine the eccentrics 13 by which the shaft is positively shifted vertically.

In order to move the shaft 9 vertically into and out of cooperation with the cam 6, the eccentrics 13, confined vertically between the faces 11 and 12, as aforesaid, are mounted upon the shaft at suitable intervals, preferably through means which cause the shaft to rotate with the eccentrics; and means are provided for imparting rotation to the eccentrics at will, such, for instance, as a hand lever 1 1 at one end of the shaft, or a socket 15 of such form as will adapt it to receive a bar or handle 14. Eccentrics 13 may be effectively assembled upon the shaft 9 through means of hub members 16 and through pins 17 and the end hub 16 may be modified in form to provide the handle or handle-receiving socket 15. In practice, castings, forgings, or other fittings 18, suitztble to provide the guide slots 10 and the faces 11 and 12 for vertically confining the eccentrics 13, will be provided and riveted, as at 19, upon the bases of the frame members 2.

In order to hold the eccentrics 13 to their positions of revolution, in which they present the shaft 9 in locking position upon the faces 8, the end hub 16 is provided with an additional element, such, for instance, as an integral toe 20, which, by the swinging of the handle 1d from the upstanding position of Figure 1 to the depending position of Figure 5, will be brought into position to engage a dog 21 secured by slot and pin connection 22 and sliding vertically into and out of such engaging position. By this means the shaft will be prevented from rota-ting and the faces 8 will all be engaged to hold the door closed until the dog 21 is intentionally displaced, and positive rotation is imparted to the eccentric through means of the handle.

Although I have described one embodiment of my invention, it will be understood that this invention is susceptible of such other embodiments as may be within the scope of the appended claims.

1 claim:

1. In combination with a door, a shaft mounted to slide laterally, a locking hearing on the door receiving the shaft in its sliding movement, and means for developing at will, said sliding movements in said shaft, comprising a rotatable eccentric mounted on said shaft and means confining said eccentric in the direction of said sliding movement.

2. In a door securing device, a locking bearing through which the door is locked, a rotary member having a bodily sliding movement into and out of cooperation with said bearing, a confined rotatable eccentric mounted on said rotary member, and means for imparting rotation to said eccentric.

3. A car door provided with a pair of bearing surfaces, a shaft mounted with lateral movement into and out of cooperative relation to said surfaces, rotatable eccentrics mounted on said shaft and confined against movement in the direction of lateral move ment of the shaft, and means for imparting rotation to said eccentrics.

4. In railway cars, a plurality of aligned doors, respectively, provided with locking faces through which to hold them in closed position, a shaft past all of said faces, bearings for said shaft, intermediate of the doors, in which the shaft is adapted to slide into and out of cooperation with the faces, and means for imparting such sliding movement to said shaft, consisting of eccentrics non-rotatably mounted upon said shaft, and means confining the eccentrics against displacement in the direction in which the shaft: slides while permitting them freedom of rotation with the shaft.

5. In a door securing device, a locking face through which to hold the door in closed position, means sliding into and out of cooperation with said face for holding the door closed, an eccentric confined against partaking of said sliding movement but free to rotate, a projection rigid with said eccentric in the direction of rotation, and a dog movable into and out of the path of said projection.

Signed at Chicago, Illinois, this 8rd day of August, 1926.

DAVID HINDAHL.

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